200011222001221 has 4 divisors (see below), whose sum is σ = 200174763475872. Its totient is φ = 199847680526572.

The previous prime is 200011222001219. The next prime is 200011222001243. The reversal of 200011222001221 is 122100222110002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 200011222001221 - 2¹ = 200011222001219 is a prime.

It is a super-2 number, since 2×200011222001221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200011222001195 and 200011222001204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200011222001281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81770735491 + ... + 81770737936.

It is an arithmetic number, because the mean of its divisors is an integer number (50043690868968).

Almost surely, 2^{200011222001221} is an apocalyptic number.

It is an amenable number.

200011222001221 is a deficient number, since it is larger than the sum of its proper divisors (163541474651).

200011222001221 is a wasteful number, since it uses less digits than its factorization.

200011222001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163541474650.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 200011222001221 its reverse (122100222110002), we get a palindrome (322111444111223).

The spelling of 200011222001221 in words is "two hundred trillion, eleven billion, two hundred twenty-two million, one thousand, two hundred twenty-one".